Expandable shelf



FIG. 1 is a perspective view of a first embodiment of an expandable shelf showing our new design;

FIG. 2 is a front view of the expandable shelf of FIG. 1;

FIG. 3 is a side view of the expandable shelf of FIG. 1;

FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 2;

FIG. 5 is a top view of the expandable shelf of FIG. 1;

FIG. 6 is a bottom view of the expandable shelf of FIG. 1;

FIG. 7 is a perspective view of a second embodiment of an expandable shelf; and,

FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 7.

The components of the display shown in broken lines illustrate portions of the expandable shelf form no part of the claimed design. 

CLAIM What is claimed is the ornamental design for an expandable shelf, as shown and described. 